[     Services listing ](/solutions/service-solutions "  Services listing")



 

 

 

 

 

 



## Our experience with the industry permits us to have turnkey chemical capability:

- Hydrex™ chemical supply
- Chemical verification's
- Chemical optimisations for plant performance & OPEX requirements

Water treatment additives are key to the long term performance of seawater treatment plants. HydrexTM water treatment additives provide optimal performance and are compatible with the membranes they are protecting/cleaning. Use of HydrexTM water treatment additives throughout the process also ensures the compatibility of products.

### Innovative chemicals to improve production

Veolia’s comprehensive line of Hydrex™ performance chemicals provides effective protection for your water injection package and enhanced oil recovery challenges.


We offer unique solutions that drive down lease operating expenses and minimise problems that threaten well profitability. We integrate chemicals, technologies, equipment systems, and robust versatile service support to provide a balanced approach to solving customer problems and maximising production efficiencies. We collaborate with your experts to optimise chemical usage, maximise uptime, objectively measure our performance, and ensure that we positively impact your balance sheet economics.

### **Water Treatment Additives for Seawater Treatment**

| HydrexTM Reference | Chemical Type |
|---|---|
| 4101 | Scale inhibitor for wide range of use (Liquid) |
| 4105 | Scale Inhibitor for high sulphate (Liquid) |
| 4910 | Scale Inhibitor - Multi functional |
| 4206 | 5% DBNPA Solution |
| 4202 | 20% DBNPA Solution |
| 4514 | Alkaline Cleaner Blend (Liquid) |
| 4501 | Alkaline Cleaner Blend (powder) |
| 4502 | Alkaline Cleaner Blend (Liquid) |
| 4503 | Acid Cleaner Blend( Liquid) |
| 4701 | Acid Cleaner (Powder) |
| 4720 | Acid Cleaner (Liquid) |
| 4301 | Sodium Metabisulphite (Liquid) |
| 4302 | Sodium Metabisulphite (Liquid) |
| 6912 | Sodium Hypochlorite (Liquid) |
| 6794 | Coagulation Aid (Liquid) |
| 6783 | Coagulation Aid (Liquid) |
| 3305 | Coagulation Aid (Liquid) |
| 6915 | Sodium Hydroxide (Liquid) |
| 4308 | Preservations Buffer (Na2HPO4) |



**Global portfolio**

Our chemical formulations are based on years of research and testing supported by our technical Research and Development Center. Our experienced staff of chemists and engineers can design a process to fit your individual plant’s needs.

**1000** **SERIES** Total boiler water treatment chemicals

**2000** **SERIES** Closed and open cooling system treatment programs

**3000** **SERIES** Drinking water production

**4000** **SERIES** Effective membrane anti-scalants and cleaners approval by major Membrane Manufacturers

**5000** **SERIES**  Industrial maintenance chemicals

**6000** **SERIES**  State-of-the-art clarification and wastewater chemistry and application experience

**7000** **SERIES** Biocides with a broad spectrum of activity and legionella control

**8000** **SERIES**  Established process and specialty chemicals

**9000** **SERIES**  Wide range of other applications



 

 

 



 

 

**HYDREX™ Water Treatment Chemicals**

- Anti-Scalants
- Non Oxidising Biocide
- Membrane Alkaline Cleaners
- Membrane Acid Cleaners
- Scavengers Cl₂/0₂
- Coagulation Aid
- Custom blended products



 

 

 

 

 

 





**A single local contact for all requirements**

- Local service everywhere
- Network of experts
- On-site visits
- Diagnostic audits
- Control of water facility parameters
- Pilots, testing
- Setting of standards



 

 

 

 

 

 





**Comprehensive range of chemicals**

- Extensive chemicals selection (more than 400 formulations)
- Research & Development of new formulations
- Drums, containers
- Quality Assurance control of raw materials, purity analysis, traceability systems, storage of samples for all production batches.



 

 

 

 

 

 





   ![Hydrex Brochure Image - Upstream](/sites/g/files/dvc3331/files/styles/media/public/image/2025/05/Hydrex%20Brochure%20Image.png.webp?itok=RvISX5yP)   





 

 





Download our brochure

 [PDF

  Upstream Hydrex Chemical & Services  (1.19 MB)  

    ](/sites/g/files/dvc3331/files/document/2020/06/190189_WESTGARTH_Upstream_Hydrex_Chemicals_Brochure_ENG_A4_LR_Draft_v03B%20%282%29.pdf) 

 



 

 

 

 

 

 

 





[Contact our Hydrex Chemical Team](/contact-our-hydrex-chemical-team)

 



 

 





 

 

 

 







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Veolia’s experience has shown that the choice and compatibility of chemicals and consumables will have a direct impact on the performance, availability and working lifetime of the Water Treatment System and its membranes – the impact of these choices should not be underestimated.